TPA3131D2

TPA3132D2

24

23

22

21

20

19

18

17

1

2

3

4

5

6

7

8

GAIN/SLV

GVDD

INPL

INNL

MUTE

GND

PLIMIT

AM2

BSNR

OUTNR

BSNL

GND

OUTNL

GND

GND

GND

220nF

220nF

220nF

220nF

1nF

220µF

100nF

1nF

220µF

100nF

680nF

680nF

10µH

10µH

10nF

10nF

3.3R

3.3R

1nF

1nF

GND

680nF

680nF

10µH

10µH

10nF

10nF

3.3R

3.3R

1nF

1nF

GND

GND

GND

GND

GND

GND

GND

GND

3.3R

1µF

1µF

1µF

1µF

GND

20k

100k

1µF

100k

OUTPUT FILTER

EMI R-C SNUBBER

10nF

GND

PVCC

FAULTZ

IN_P_RIGHT

IN_N_RIGHT

IN_N_LEFT

IN_P_LEFT

MUTE

PVCC

PVCC

PVCC DECOUPLING

PVCC DECOUPLING

RP2

RP1

TPA3131D2

PVCC

RP1

RP1

TPA3132D2

7.4V

75k3

27k3

19V

56k3

39k3

TPA3131D2, TPA3132D2

www.ti.com

SLOS841B – SEPTEMBER 2013 – REVISED JANUARY 2015

8 Applications and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

This section describes a typical stereo speaker application with differential inputs. The amplifier gain is set to

26 dB and the output PWM is set to 400 kHz.

8.2 Typical Application

Figure 29. Typical Application Schematic

8.2.1 Design Requirements

DESIGN PARAMETERS

EXAMPLE VALUE

Input voltage range PVCC

4.5 V to 26 V

PWM output frequencies

400 kHz, 500 kHz, 600 kHz, 1 MHz or 1.2 MHz

Maximum output power

25 Wx2 (TPA3132D2) or 4 Wx2 (TPA3131D2)

Copyright © 2013–2015, Texas Instruments Incorporated

Submit Documentation Feedback

21

Product Folder Links: TPA3131D2 TPA3132D2